{
  "application": {
    "client_local": {"address": "127.0.0.1", "port": 49894},
    "client_remote": {"address": "127.0.0.1", "port": 46649},
    "payload_bytes": 65536,
    "payload_sha256": "7daca2095d0438260fa849183dfc67faa459fdf4936e1bc91eec6b281b27e4c2",
    "response": "APP_OK",
    "server_error": null,
    "server_local": {"address": "127.0.0.1", "port": 46649},
    "server_received_bytes": 65536,
    "server_received_sha256": "7daca2095d0438260fa849183dfc67faa459fdf4936e1bc91eec6b281b27e4c2",
    "server_remote": {"address": "127.0.0.1", "port": 49894}
  },
  "assertions": {
    "application_response_received": true,
    "both_established_rows_found_before_receive": true,
    "loopback_counters_increased": true,
    "sendall_returned": true,
    "server_payload_hash_matches": true,
    "server_received_exact_payload": true,
    "server_rx_queue_nonzero_before_application_recv": true
  },
  "boundaries": [
    "all traffic is self-owned IPv4 loopback traffic",
    "host counters are shared and cannot be uniquely attributed to this process",
    "loopback does not validate physical NIC interrupts, rings, offloads, frames, or performance"
  ],
  "environment": {
    "kernel": "5.10.134-013.16.kangaroo.al8.x86_64",
    "platform": "Linux",
    "python": "3.12.3"
  },
  "proc_net_tcp": {
    "after_server_recv": {
      "client": {"local": ["127.0.0.1", 49894], "remote": ["127.0.0.1", 46649], "rx_queue": 0, "state": "ESTABLISHED", "tx_queue": 0},
      "server": {"local": ["127.0.0.1", 46649], "remote": ["127.0.0.1", 49894], "rx_queue": 0, "state": "ESTABLISHED", "tx_queue": 0}
    },
    "before_server_recv": {
      "client": {"local": ["127.0.0.1", 49894], "remote": ["127.0.0.1", 46649], "rx_queue": 0, "state": "ESTABLISHED", "tx_queue": 43691},
      "server": {"local": ["127.0.0.1", 46649], "remote": ["127.0.0.1", 49894], "rx_queue": 43690, "state": "ESTABLISHED", "tx_queue": 0}
    }
  },
  "shared_host_counters": {
    "loopback_before": {"rx_bytes": 13595642447, "rx_packets": 13243603, "tx_bytes": 13595642447, "tx_packets": 13243603},
    "loopback_after": {"rx_bytes": 13595708614, "rx_packets": 13243618, "tx_bytes": 13595708614, "tx_packets": 13243618},
    "loopback_delta": {"rx_bytes": 66167, "rx_packets": 15, "tx_bytes": 66167, "tx_packets": 15},
    "softnet_before": {"cpu_rows": 4, "first_three_columns_sum": [18564896, 0, 29]},
    "softnet_after": {"cpu_rows": 4, "first_three_columns_sum": [18564911, 0, 29]},
    "tcp_snmp_before": {"ActiveOpens": 924184, "InSegs": 17965269, "OutSegs": 31739016, "PassiveOpens": 444828, "RetransSegs": 43086},
    "tcp_snmp_after": {"ActiveOpens": 924185, "InSegs": 17965284, "OutSegs": 31739031, "PassiveOpens": 444829, "RetransSegs": 43086},
    "tcp_snmp_delta": {"ActiveOpens": 1, "InSegs": 15, "OutSegs": 15, "PassiveOpens": 1, "RetransSegs": 0}
  }
}